The book “Sewage Treatment Facilities of the Settlement” by Adalsha and Safin is a unique publication that immerses the reader in the world of engineering and ecology, revealing important aspects of the design and operation of wastewater treatment systems. This is not just a technical guide, but a real encyclopedia of knowledge that will be useful to both professional engineers and students studying environmental and construction sciences. In today's world, where environmental issues are becoming more and more relevant, understanding the operation of sewage systems and treatment facilities becomes especially important. The book covers a wide range of topics, ranging from basic design to modern wastewater treatment technologies. The authors, with extensive experience in the design and operation of treatment plants, share their knowledge and practical recommendations, which makes the text not only informative, but also practical. Who can like this publication? First of all, it will be interesting for students and postgraduates of technical universities studying ecology, hydraulic engineering and engineering sciences . The book will also become an indispensable assistant for practicing engineers working in the field of water supply and sanitation. In addition, it can attract the attention of environmentalists and environmental professionals who seek to deepen their knowledge of wastewater treatment technologies and their impact on ecosystems. The topics raised in the book cover not only technical aspects, but also social and environmental issues related to water quality and its impact on public health. The authors emphasize the importance of proper design of wastewater treatment plants to ensure sustainable development of human settlements and environmental protection. They consider different approaches to wastewater treatment, including biological, chemical and physical methods, allowing the reader to gain a complete understanding of modern technologies. Adalsha and Safin’s writing style is both accessible and clear, making complex technical concepts understandable to a wide audience. The authors use many examples from practice, which allows the reader not only to learn theoretical knowledge, but also to see how they are applied in real life. This makes the book not only a textbook, but also an interesting read for anyone who wants to understand how wastewater treatment systems are arranged. In addition to the sewage treatment plants of the settlement, Adalshi and Safin are known for other works in the field of engineering and ecology, which are also worthy of attention. Their books often become handbooks for students and professionals seeking to keep abreast of the latest trends and technologies in their field. If you are looking for information about how wastewater treatment plants work, how they are designed and what technologies are used for wastewater treatment, then the “Settlement Sewage Treatment Plant” will be a real discovery for you. This publication will not only expand your knowledge, but also inspire new ideas and solutions in the field of ecology and engineering. Do not miss the opportunity to get acquainted with this important and relevant topic that affects each of us.